A while ago I posted my story of getting 10.1 onto my 2400, and how I found a cheap CompUSA Cardbus ethernet card for which I could download drivers from Realtek. This is all still good, but I occasionally get network lockups, and I wonder how robust the Realtek drivers really are. (Also, maybe it's better on 10.2, which I haven't yet tried.) I know that Mac OS X includes drivers for certain DEC and Intel ethernet chipsets, and theoretically if you had a card based on those, no additional software would be necessary. Proxim (Farallon) specifically lists four of their cards that work with OS X out of the box, but they are all desktop cards. I myself tried a Linksys MPC200 Cardbus card, which I thought used the DEC Tulip chipset, and it didn't work with 10.1.5, but I didn't really consider it to be a conclusive test. So, I am wondering, has anyone used any ethernet PC Cards with Mac OS X on their 2400's which did not require additional drivers? I'd be interested to know. Thanks, Ivan.